Daxia Promise Keeper

Do you know why it rains heavily when Jam Hsiao holds a concert? Do you know why some people look like foxes, some people look like mice, and some people look like dragons? Do you think the world is really as simple as what we see? Are those ancient legends and myths really just things that the ancients made up out of thin air? Can people really describe a non-existent thing to great detail through imagination? As a promise keeper, Yang Yan is also pursuing the truth of this world and the truth of that year.